Sound absorbing irregularly shaped panel

Details Sound absorbing irregularly shaped panel Sound absorbing irregularly shaped panel

1981-09-29

1983-12-13

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

181224, 181293, 181294, 428156, 428192, 428233, 428280, 428284, 428287, 428296, 428297, 428298, 428303, B32B 514

Patent

active

044205260

ABSTRACT:
A panel for sound insulation of vehicles or other devices is described which is constructed of a fabric of autogenously and chemically bonded, matted polyester fibers having fine surface pores. The fabric is shaped by compression so that it has a thickness of 1 to 3 mm. and exhibits an acoustical impedance of about 30 to about 100 Rayl.

REFERENCES:
patent: 3341394 (1967-09-01), Kinney

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