PP Foam Sheet - Introduction Manufacturing Method for Non-Crosslinked PP Foamed Sheet As a manufacturing method for foam products, chemical foaming method has been used which suppressing foaming in the cylinder by maintaining high pressure by supplying resin compounded with foaming agent and extruding at the exit of workstation. However, high expended products can not be manufactured.There is also a physical foaming method that infusing organic compounds such as butane pentane into the resin in the extruder, and foaming by extruding them at the worktable.This...