Polyolefin foams are composed of several materials that have been kneaded together. Typically it involves an organic blowing agent and a cross-linking agent. These come together to make the Polyolefin resin. It is created by thermally decomposing the foaming in a closed system.

Polyolefin is a very general term to describe any compound produced from an olefin as a monomer. Depending on what type of olefin is used, you have different types of polyolefins. For example, if using ethylene as the monomer, you will end up with polyethylene.

It is inexpensive and very light weight and has a wide range of applications. It is often used in the interior casing of airplane and auto parts as well as in the food industry.


Closed cell

  • A-8
  • L-2500
  • LD-45


Interconnected cell

  • LC-150
  • LC-300#1

Main Uses


Shipping Crates
Containers(for tools or stationary)


Joint Filler
Back-up Material
Roof Insulation Material


Ceiling Material
Sound-absorbing Material


Joint Mat
Nose Pad Masks


PE – Polyethylene

PE is an abbreviation for polyehtylene foam. This type of polyolefin is made by polymerizing the olefin ethylene.
Polyethylene foam is actually very similar to polyurethane foam and rubber sponges. However, polyethylene is stronger and has better load-bearing capacity.
It is a phyiscally stable material with good chemical and weather resistance.
Since it is a closed-cell foam, it has good thermal insulation and tightness.
It also has the additional feature of being rich in color.

EVA – Ethylene Vinyl Acetate

EVA is an abbreviation for Ethylene Vinyl Acetate. It is a co-polymer resin of ethylene and vinyl acetate.
It is more flexible and elastic than polyethylene. It is durable yet easily to mold.

PP – Polypropylene

PP is an abbreviation for Polypropylene.
Polypropylene is typically more rigid and non-stretching than polyethylene.
It is also more resistant to chemicals and heat than polyethylene. It is characterized by it’s light weight.


PE LITE Sunpelca

It is a low density polyethylene foam created by kneading together an organic foaming agent, cross-linking agent, and coloring agent. It is made by utilizing thermal decomposition.
It is a closed cell product, with good thermal insulation and shock-absorption capabilities.
It also has a range of expansion ratios(5x-50x) and is available in a wide range of colors.


Opcell is an open-celled polyethylene foam, cross-linked with a chemical cross-linking agent.
It is similar to a flexible polyurethane foam , but it is more resistant to ultraviolet rays.
As it is open-celled, it absorbs sound and water. It can also be used as a thermal barrier and for sealing.


Toraypefu is developed by Toray Industries Inc. They use a unique manufacturing technique that allows them to make polyolefin foam.
It is completely closed cell and has a sheet length that is anywhere from 5 to 40 times the sheet length of regular foam.
On top of this, it has excellent heat insulation, thermal conductivity, and water absorption. Lastly, it has very low permeability and a smooth surface.

Suntech Foam

This is a non-crosslinked, high-foamed, low density material.
It’s main feature is that it has superior cushioning that absorbs impact energy.
Thus, it is effective at protecting goods from shock damage while being transported.
It has adequate flexibility and excellent elasticity.


A new type of polypropylene sheet foam created by the technology corporation JSP. It is a high performance product that has a permanent anti-static function.
It is able to prevent all static electricity(due to friction) that occurs in the transportation of goods.
It maintains this property and does not degrade even when subjected to washing or constant friction. By doing a half-cut, it is possible to easily shape and mold the foam.
Typical use of this material involves taping the foam in a box to prevent damage.

F Cell

This is a non-crosslinked polypropylene sheet made by Furukawa Electric Company. They use a special extrusion gas foaming technology when making this product.
It has a smooth, soft surface and is very light weight. It is also easy to weld once heated and has printing resistance.
Its applications include riveting, covering, and boxing of stationary files. Since this is a carbon dioxide foam, it is hygienic and environmentally harmless.
In addition, because it is an almost %100 polypropylene, non-crosslinked foam, it is recyclable.

For all your rubber, urethane, and polyolefin needs, please leave it up to Chiyoda Rubber.


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