Sealing acoustical baffle and method therefor

摘要

This is a sealing material for filling a cavity of a pillar or another body member of an automobile. The material is a sealing acoustical baffle of a sandwich of foil faced paper board with an expandable sealant between the boards. The baffles force the sealer to flow out horizontally from the boards to totally seal all corners of the cavity. The in-line manufacturing of extruded laminated material allows in-line die cutting with quick change dies and/or water jet cutting. Acoustical value is very high due to the barrier affect of the foil kraft board. If the cavity size changes as they often do during pilot, prototype and production, the only tooling charge is a simple steel rule die or modified water jet program.