FOAMED SHEET OF POLYOLEFIN RESIN, SOUND ABSORBING MATERIAL AND COMPONENT FOR AUTOMOBILE, AND MANUFACTURING METHOD OF FOAMED SHEET OF POLYOLEFIN RESIN

摘要

PROBLEM TO BE SOLVED: To provide a foamed sheet of polyolefin resin which can enhance sound absorbability to noise in a wide region containing a high frequency region while suppressing increases in weight and thickness.

SOLUTION: There is provided the foamed sheet of polyolefin resin having open cells which has a part where the diameter of the cells varies from at least one side surface toward the other side surface.

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