Polyethylene Pipe Insulation
This information reflects our best understanding of product composition in 2015.
Polyethylene pipe insulation is composed of a closed-cell polyethylene foam typically sold in a tube sleeve of varying pipe sizes and thicknesses. The polyethylene foam is produced by extruding polyethylene resin with other additives such as aging...
Polyethylene pipe insulation is composed of a closed-cell polyethylene foam typically sold in a tube sleeve of varying pipe sizes and thicknesses. The polyethylene foam is produced by extruding polyethylene resin with other additives such as aging modifiers, nucleating agents, pigments and flame retardants. Once mixed, a hydrocarbon blowing agent is injected under high pressure into the extruder and the blended material is pushed through a die at the end of the extruder, forming a tube. Upon exiting the extruder, the blowing agent pressure normalizes, causing the mixed resin to expand. Once the foam cools and solidifies, the insulation can be packaged as an unslit tube, with a slit, or with a slit and pre-applied adhesive. This CP is for a pipe insulation product without a pre-applied adhesive.