Acoustic panel and enclosure

Details Acoustic panel and enclosure Acoustic panel and enclosure

G - Physics

10

K

181/14

G10K 11/00 (2006.01) B41J 29/08 (2006.01)

Patent

CA 1253086

-30- ABSTRACT OF THE DISCLOSURE An acoustic enclosure (10) has interconnected sound re- ducing sheets forming a substantially rectangular structure which is configured to house a computer printer or other noise generating article. Each side (12, 14) sheet is a multiple strata sheet having an outer thin stratum (26), a multiple channel intermediate thermoplastic stratum (28) and an inner open celled acoustic ma- terial stratum (30). The rear and bottom sheets (16, 18) are multiple stratum sheets, having a multiple channel intermediate thermpolastic stratum (46) which is sandwiched between inner and outer polyurethane foam strata (44, 48). An adhesive material (42) is provided for bonding the outer stratum to the intermediate stratum and the intermediate stratum to the inner stratum for each of the sheets. An angle member (62) affixed to the intermediate stratum is provided for joining adjacent sheets of the enclosure. A rigid thermpolastic hinged sheet (22) having a uniform non- pinched bend (52) is provided as a window for the enclosure. Method and apparatus for producing such bends comprise use of sequentially initiated heating of the bottom (wide band continuous band heating to softening point) and then top of the sheet (narrow band focussed heating to a narrow bend) to make the sheet so bend- able. The bent sheet serves as a supplemental panel extension to afford view zones of the enclosure. The various (side type, rear type) panels, with and without such sheet extensions, are also usable in the non-enclosing uses, including use as walls or room- dividers. Electrical wiring and fixtures and panel surface mounted heaters can be accommodated by the allowable constructions of the panels. The thin outer stratum can be replaced by an adhesive.

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