Noise isolation sheet

摘要

A noise isolation sheet is installed in a car door that includes a door inner panel and an interior door trim. The door trim is provided inside the door inner panel. The noise isolation sheet partially or wholly covers the door inner panel. The noise isolation sheet has at least two layers including an outer side sheet and an inner side sheet. The outer side sheet includes a first foam body having water absorption of less than 30%, and the inner side sheet includes a second foam body having water absorption of 30% or more.