There are many types of extrusion, both foam and sponge. Sponge extrusions typically refer to cellular rubber products. For this discussion, we will focus on the most common foam extrusion, polyethylene foam . Polyethylene foam extrusions are available in a wide variety of product including pool noodles, pipe wrap, backer rod, and custom extrusions. Custom extrusions are typically produced in the 2-6 PCF (per cubic foot) density range, although much higher densities are available. These custom foam extrusions find applications in construction, automotive and transportation, as well as in custom packaging.
The custom polyethylene extrusions are available in a wide variety of colors, formulations including fire retardant. PSA (pressure sensitive adhesive) can be added, as well as secondary operations including cut to length and heat welding. The custom polyethylene foam extrusions are inexpensive to tool, and can work very cost effectively in a wide variety of applications substituting for more costly materials.
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